Figure 9
Comparison of reflectance spectra of Au (a) and Ag (b) nanoparticle assemblies under normal illumination with 1 nm and 4 nm interparticle gaps at two perpendicular polarizations. The maximum near-field enhancement spectra of Au (c) and Ag (d) nanoparticle assemblies (shown only for an interparticle gap of 1 nm) at different polarization angles denoted by φ. Horizontal polarization, φ = 0° and vertical polarization, φ = 90° are defined w.r.t to the plane of the screen. The incident wave is normal to the plane of the nanoparticle film in all cases. (embedding medium, n = 1.33).
